Home / 7,815.96-10,786.09-4,629.43

Finding the Fourth Proportional to 7,815.96, 10,786.09 and 4,629.43

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Solution

The fourth proportional to 7,815.96, 10,786.09 and 4,629.43 is: 6,388.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,815.96 : 10,786.09 = 4,629.43 : x
  2. Step 2: Convert to fraction form
    7,815.96/10,786.09 = 4,629.43/x
  3. Step 3: Cross multiply
    7,815.96x = 10,786.09 × 4,629.43
  4. Step 4: Simplify right side
    7,815.96x = 49,933,448.63
  5. Step 5: Solve for x
    x = 49,933,448.63/7,815.96
  6. Step 6: Final answer
    x = 6,388.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.